This Plugin shows a List from a Link Category on a Page using the [plinks] shortcode. You can provide the category as a parameter to choose which list is displayed.
To view a single website preview image, provided by <a href="http://www.pagepeeker.com">PagePeeker</a> you can use the [pagepeeker] shortcode.
For Thumbnails to work you have to register a free account and add your domain at http://pagepeeker.com/signup/free/
Needs reactivation of the original Wordpress Link Manager.